CN217185716U - Cooking utensil - Google Patents

Abstract

The utility model discloses a cooking utensil, which comprises a cover body, a pot body and an electric gas exchange device; the cover body or the cooker body comprises a base, and the electric gas exchange device is arranged on the base and comprises an electric drive unit, a transmission device, an airflow generating device, an air inlet and outlet valve device, a shell and a damping sleeve; the transmission device is connected with the electric drive unit so as to be driven by the electric drive unit to do reciprocating motion; the air flow generating device is connected with the transmission device and is provided with a flexible cavity which is switched between a squeezed state and a reset state; the air inlet and outlet valve device is connected with the airflow generating device and is provided with a valve air inlet and a valve air outlet which are respectively communicated with the flexible cavity, the valve air inlet is communicated with the outside atmosphere, and the valve air outlet is communicated with the cooking space; each of the electric drive unit, the transmission, the gas flow generating device and the gas inlet and outlet valve device is at least partially disposed in a housing, a shock-absorbing sleeve is sleeved outside the housing, and the electric gas exchange device is connected to the base through the shock-absorbing sleeve to reduce or eliminate vibration noise.

Description

Cooking utensil

Technical Field

The utility model relates to a kitchen utensil technical field particularly relates to a cooking utensil.

Background

Known cooking appliances (e.g., rice cookers) increase the cooking speed by reducing the temperature and pressure in the pot during cooking, such as rapid cooking usually achieved by blowing air into the pot with an air pump, however, the pressure and flow range of the known air pump are difficult to satisfy the cooking requirements of the existing cooking appliances. To achieve faster cooking speed, a larger air pump is often required to achieve, resulting in higher space, noise, and cost of the cooking appliance.

To this end, the present invention provides a cooking appliance to at least partially solve the problems of the prior art.

SUMMERY OF THE UTILITY MODEL

A series of concepts in a simplified form are introduced in the summary section, which will be described in further detail in the detailed description section. The inventive content of the present application does not imply any attempt to define the essential features and characteristics of the claimed solution, nor does it imply any attempt to determine the scope of the claimed solution.

In order to solve the above problem at least partially, the utility model discloses a cooking utensil, it includes:

a cover body;

the cover body is arranged on the cooker body, when the cover body covers the cooker body, a cooking space is formed between the cover body and the cooker body, and the cover body or the cooker body comprises a base; and

an electrically powered gas exchange device disposed on the base and comprising:

an electric drive unit;

a transmission device connected with the electric drive unit to be driven by the electric drive unit to reciprocate;

an air flow generating device connected with the transmission device, wherein the air flow generating device is provided with a flexible cavity which is configured to be capable of being switched between a squeezed state and a reset state under the reciprocating action of the transmission device;

the air inlet and outlet valve device is connected with the airflow generating device and is provided with a valve air inlet and a valve air outlet which are respectively communicated with the flexible cavity, the valve air inlet is communicated with the outside atmosphere, and the valve air outlet is communicated with the cooking space;

a housing in which each of the electric drive unit, the transmission, the air flow generating device, and the air inlet and outlet valve device is at least partially disposed; and

a shock-absorbing sleeve sleeved outside the housing, and the electric gas exchange device is connected to the base through the shock-absorbing sleeve.

According to the utility model discloses a cooking utensil, at the culinary art in-process, when the food in the culinary art space is in the boiling stage, electronic gas exchange device can be through valve air inlet suction gas to carry gas to the culinary art space in through the valve gas outlet. The temperature difference between the delivered gas and the foam in the cooking space exists, so that the delivered gas can liquefy and shrink the steam in the foam to break after entering the cooking space and contacting the foam accumulated in the cooking space, and the overflow of the pot is prevented. The overflow can be avoided even under the condition of fast cooking with large fire. Moreover, the airflow generating device can realize the pressure and speed change of the airflow through the compression and the stretching of a flexible cavity with a certain volume, and can realize the automatic control of the airflow by combining an electric driving unit, an air inlet and outlet valve device and the like, thereby providing a gas exchange function for the cooking space. The scheme has the advantages of large air flow, low working noise and low cost. Further, the damping sleeve is sleeved on the outer side of the shell, and the electric gas exchange device is connected to the base through the damping sleeve, so that the vibration noise of the electric gas exchange device can be reduced or even eliminated.

Optionally, at least two connecting portions are arranged on the base, the damping sleeve correspondingly comprises at least two matching portions, the matching portions are connected to the connecting portions, and the distance between the connecting portions is greater than the distance between the corresponding matching portions, so that the damping sleeve is in a transversely stretched state.

According to the scheme, the base and the damping sleeve are connected simply, the assembly efficiency can be improved, the production cost is reduced, the damping sleeve can be separated from the base in a large distance with the base in the longitudinal direction, and therefore the noise caused by contact/resonance between the base and the damping sleeve can be prevented.

Optionally, the connecting portion is a connecting column disposed on the base, the fitting portion is a connecting hole, the connecting portion extends through the connecting hole, and/or the connecting portion and the connecting hole are in interference fit.

According to the scheme, the connection mode of the matching part and the connecting part is simple, the assembly efficiency can be improved, and the production cost is reduced.

Optionally, a relationship between a distance L1 between two of the connection holes of the damper sleeve and a distance L2 between two of the corresponding connection portions satisfies: L2-L1 is more than or equal to 5 mm.

According to the scheme, the vibration damping sleeve can be transversely stretched when the vibration damping sleeve is connected to the base, so that the contact area between the electric gas exchange device and the base due to gravity is reduced, the vibration of the electric gas exchange device is buffered or absorbed, and the vibration noise of the electric gas exchange device is reduced or even eliminated.

Optionally, the electric gas exchange device includes two damping sleeves, the two damping sleeves are respectively sleeved at two ends of the housing, each damping sleeve is provided with two connecting holes, and the base is correspondingly provided with four connecting portions.

According to this scheme, through setting up two shock attenuation covers, be convenient for realize unsettling electronic gas exchange device's one end, can improve the damping effect of shock attenuation cover.

Optionally, the damping sleeve still includes the installation department, the installation department cover sets up the outside of shell, the surface of installation department be provided with a plurality of bellying of base contact.

According to this scheme, damping sleeve's simple structure, the processing of being convenient for can reduction in production cost, is provided with a plurality of bellyings through the surface at the installation department, can reduce the electric gas exchange device because of the gravity cause and the base between area of contact to the vibration of buffering or absorption electric gas exchange device.

Optionally, the plurality of protrusions are arranged at equal intervals, and/or

The plurality of protrusions are of a hemispherical, cylindrical or polyhedral structure.

According to the scheme, the bulge is simple in structure, convenient to process and capable of reducing production cost.

Optionally, the airflow generating means comprises a side wall for forming the flexible chamber, the side wall comprising at least one corrugated structure of wave crest configuration.

According to the scheme, the airflow generating device is simple in structure, convenient to manufacture and capable of reducing production cost, and the side wall comprises the corrugated structure with at least one wave crest structure, so that reciprocating motion of the flexible cavity is achieved.

Optionally, the transmission means comprises an eccentric wheel connected to the electric drive unit, and an eccentric shaft connected to the eccentric wheel, the electric drive unit being capable of driving the eccentric wheel and the eccentric shaft in rotation, the eccentric shaft being connected to the air flow generating means to drive the flexible chamber to switch between the squeezed state and the restored state.

According to the scheme, the transmission device is simple in structure, convenient to assemble and easy to realize.

Optionally, the air flow generating device includes a closed end and an air guide end respectively located at two ends of the flexible cavity, the eccentric shaft is connected to the closed end, and the air inlet and outlet valve device is connected to the air guide end.

According to the scheme, the airflow generating device is simple in structure, convenient to assemble and easy to realize.

Optionally, the air inlet and outlet valve device comprises a first valve body, a second valve body air inlet membrane and an air outlet membrane, the first valve body is provided with an air inlet channel and an air outlet channel which are communicated with the flexible cavity respectively, the valve air inlet and the valve air outlet are arranged on the second valve body respectively, the air inlet membrane and the air outlet membrane correspond to the air inlet channel and the air outlet channel respectively and are connected to the first valve body, the air inlet membrane can realize elastic deformation along with the air flow direction so as to communicate or separate the air inlet channel and the valve air inlet, and the air outlet membrane can realize elastic deformation along with the air flow direction so as to communicate or separate the air outlet channel and the valve air outlet.

According to the scheme, the air valve inlet and outlet device is simple in structure, convenient to assemble and easy to realize.

Optionally, the air inlet and outlet valve device further comprises a sealing diaphragm, a peripheral edge of the sealing diaphragm is arranged between the first valve body and the second valve body, and the sealing diaphragm is provided with an air inlet passage port communicating the valve air inlet with the air inlet channel and an air outlet passage port communicating the valve air outlet with the air outlet channel.

According to the scheme, the sealing diaphragm is simple in structure, and the sealing diaphragm can seal the gap between the first valve body and the second valve body.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, for illustrating the principles of the invention.

In the drawings:

fig. 1 is a schematic sectional view of a partial structure of a cooking appliance according to a preferred embodiment of the present invention;

FIG. 2 is a partial schematic structural view of the lid of the cooking appliance of FIG. 1 showing the inner liner and the electrically powered gas exchange device;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic cross-sectional view taken along line B-A of FIG. 2;

FIG. 5 is another cross-sectional schematic view of the lid of the cooking appliance of FIG. 1;

FIG. 6 is a schematic perspective view of the electrical gas exchange device of FIG. 2;

FIG. 7 is an exploded perspective view of the electrical gas exchange device of FIG. 6;

FIG. 8 is a schematic cross-sectional view of a portion of the cover of FIG. 1 showing the electrokinetic gas exchange device, the inlet conduit, and the outlet conduit;

FIG. 9 is a perspective view of a damping sleeve of the electrical gas exchange device of FIG. 6;

figure 10 is a cross-sectional schematic view of the shock absorbing sleeve of figure 9.

Description of reference numerals:

100: the cooking appliance 110: pot body

111: an inner pot 112: heating device

120: cover 121: upper cover

122: inner liner 123: detachable cover

124: the steam valve assembly 125: cover air inlet

126: the steam passage 127: steam outlet

128: cover air outlet 129: connecting part

130: electric gas exchange device 131: electric drive unit

132: the transmission 133: airflow generating device

134: in-out valve device 135: flexible cavity

136: eccentric wheel 137: eccentric shaft sleeve

138: closed end 139: air guide end

141: first valve body 142: second valve body

144: sealing diaphragm 145: valve air inlet

146: valve outlet 147: air inlet channel

148: gas outlet channel 149: eccentric shaft

150: intake pipe 151: air inlet diaphragm

152: the air outlet membrane 156: air inlet mounting column

157: outlet mounting post 158: air inlet mounting hole

159: air outlet mounting hole 160: air outlet pipeline

180: outer shell 181: shock-absorbing sleeve

182: side wall 183: noise reduction upper shell

184: the noise reduction lower shell 185: air inlet through port

186: outlet passage 188: mounting part

189: connection hole 190: cooking space

191: food storage space 192: space of cavity

193: raised part

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring embodiments of the present invention.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. It should be noted that ordinal numbers such as "first" and "second" are used in the present application for identification only, and do not have any other meanings, such as a specific order. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component". The terms "upper", "lower", "front", "rear", "left", "right" and the like as used herein are for illustrative purposes only and are not limiting.

The utility model provides a cooking utensil. The cooking appliance according to the utility model can be an electric cooker, an electric pressure cooker or other electric heating appliances. In addition, the cooking appliance may have other functions such as cooking porridge and cooking soup in addition to the function of cooking rice.

Fig. 1 shows a schematic view of a cooking appliance 100 according to an embodiment of the present invention. In fig. 1, only a partial structure of the cooking appliance 100 is schematically illustrated for simplicity.

As shown in fig. 1, the cooking appliance 100 includes a pot body 110. The pot body 110 may have a generally rounded rectangular parallelepiped shape, a generally cylindrical shape, or any other suitable shape. The pot body 110 is provided therein with an inner pot 111 having a substantially cylindrical shape or any other suitable shape. The inner pot 111 can be freely put into or taken out of the inner pot receiving part of the pot body 110 to facilitate cleaning of the inner pot 111. The inner pot 111 is used to store food to be cooked, such as rice, soup, etc. The top of the inner pan 111 has a top opening. The user can store food to be cooked in the inner pot 111 through the top opening or take cooked food out of the inner pot 111 through the top opening.

The pot body 110 is further provided therein with a heating means 112 for heating the inner pot 111. The heating device 112 may heat the inner pan 111 at the bottom and/or the side of the inner pan 111. The heating device 112 may be an electric heating tube or an induction heating device such as a solenoid coil.

As shown in fig. 1, a lid 120 is provided above the pot body 110. The shape of the cover 120 substantially corresponds to the shape of the pot body 110. For example, the cover 120 may have a rounded rectangular parallelepiped shape. The cover 120 is provided to the pot body 110 in an openable and closable manner, for covering the entire top of the pot body 110 or at least the inner pot 111 of the pot body 110. Specifically, in the present embodiment, the cover 120 may be pivotably disposed above the pot body 110 between the maximum open position and the closed position by, for example, hinging. The hinged position of the lid 120 and the pot body 110 is generally located at the rear end of the cooking appliance 100, so that the user can operate at the front end of the cooking appliance 100. It should be noted that the terms "front" and "rear" are used herein with reference to the position where the user uses the cooking appliance. Specifically, a direction in which the cooking appliance faces the user is defined as "front", and a direction opposite thereto is defined as "rear".

As shown in fig. 1, when the cover 120 is closed over the pot body 110, a cooking space 190 is formed between the cover 120 and the pot body 110 (specifically, the inner pot 111 of the pot body 110). The cooking space 190 includes a food storage space 191 and a cavity space 192. Specifically, the food storage space 191 refers to a space where food is actually stored. The cavity space 192 is located above the food storage space 191. That is, when the cover 120 is covered on the pot body 110, the cavity space 192 is a space between the upper surface of the food and the cover 120. There is no strict boundary between the food storage space 191 and the cavity space 192, and the volume of the two spaces may change according to the specific change of the volume of the food material.

It should be noted that directional terms and positional terms used herein in describing the respective components and their positional relationships in the cover body 120, such as "above", "below", "upper side", "lower side", "upward", "downward", "above", "below", "high", "low", "horizontal distance", etc., are relative to the cover body 120 when in the covering position.

As shown in fig. 2, 4 to 8, the cooking appliance 100 further comprises an electric gas exchange device 130, an air inlet pipeline 150 and an air outlet pipeline 160. The electric gas exchange device 130 serves to transfer gas outside the cooking appliance 100 (e.g., outside cold air) to the cooking space 190 (more specifically, the cavity space 192). The electric gas exchange device 130 may be disposed at any suitable location of the cooking appliance 100. Preferably, the electrically powered gas exchange device 130 is disposed on the cover 120. It is further preferred that the electrically powered gas exchange device 130 be generally horizontally recumbent within the cover 120 to reduce the size of the cover 120 in the vertical direction. It is understood that the electrically powered gas exchange device 130 may also be disposed on the pot body 110, as desired.

As shown in fig. 1 to 5, the cover body 120 mainly includes an upper cover 121, an inner liner 122 disposed below the upper cover 121, and a detachable cover 123 disposed below the inner liner 122. Removable cover 123 is removably attached to inner liner 122, and electrically powered gas exchange device 130 may be disposed between upper cover 121 and inner liner 122 and attached to inner liner 122 (one example of a base).

As shown in fig. 5 to 8, the electric gas exchange device 130 mainly includes an electric driving unit 131, a transmission device 132, a gas flow generating device 133, an air inlet and outlet valve device 134, a housing 180 and a damping sleeve 181. Each of the electric drive unit 131, the transmission 132, the airflow generating device 133, and the air valve device 134 are at least partially disposed within the housing 180. The shock-absorbing sleeve 181 is sleeved outside the housing 180, and the electric gas exchange device 130 is connected to the inner liner 122 through the shock-absorbing sleeve 181, so that the vibration noise of the electric gas exchange device 130 can be reduced or even eliminated.

As shown in fig. 4, 6 and 7, the housing 180 includes a noise reduction upper shell 183 and a noise reduction lower shell 184. The noise reduction upper shell 183 is disposed above the noise reduction lower shell 184, and is connected to the noise reduction lower shell 184. The electric drive unit 131, the transmission device 132, the airflow generating device 133 and the air inlet and outlet valve device 134 are arranged between the noise reduction upper shell 183 and the noise reduction lower shell 184, and the damping sleeve 181 is sleeved on the outer sides of the noise reduction upper shell 183 and the noise reduction lower shell 184. Preferably, the damping sleeve 181 is made of a flexible material such as silicone or rubber.

The cover 120 is provided with at least two coupling portions 129, as shown in fig. 2, 4 and 5, the coupling portions 129 being provided on the liner 122. As shown in fig. 2, 4 to 9, the damping sleeve 181 correspondingly includes at least two mating portions, the mating portions are connected (e.g., snapped) to the connecting portions 129, and a distance between the connecting portions 129 is greater than a distance between the corresponding mating portions to place the damping sleeve 181 in a laterally stretched state. Specifically, the fitting portion is a coupling hole 189, the coupling hole 189 is configured as a circular through hole, and the coupling portion 129 extends through the coupling hole 189 (see fig. 5). Preferably, the connecting portion 129 and the connecting hole 189 are interference fit. More specifically, the connecting portion 129 is configured substantially in a columnar structure, and the outer surface of the connecting portion 129 is provided with a groove extending in the circumferential direction, with which the connecting hole 189 is fitted.

Preferably, the relationship between the distance L1 between the two connecting holes 189 of the damper sleeve 181 and the distance L2 between the corresponding two connecting portions 129 satisfies: L2-L1 is more than or equal to 5 mm. In the present embodiment, as shown in fig. 2, 6 to 8, the electric gas exchange device 130 includes two damping sleeves 181, the two damping sleeves 181 are respectively sleeved on two ends of the housing 180, each damping sleeve 181 is provided with two connecting holes 189, the liner 122 is correspondingly provided with four connecting portions 129, and the positions of the four connecting portions 129 correspond to the positions of the four connecting holes 189.

Further preferably, a relationship between a distance L1 (see fig. 1) between the two connecting holes 189 of each cushion sleeve 181 and a distance L2 (see fig. 2) between the corresponding two connecting portions 129 satisfies: L2-L1 is more than or equal to 5 mm. Thereby, it can be achieved that when the damping sleeve 181 is connected to the inner liner 122, the damping sleeve 181 is stretched in the horizontal direction (i.e., the lateral direction) (as shown in fig. 5, the connection holes 189 on the damping sleeve 181 are also stretched accordingly) to reduce the contact area between the electric gas exchange device 130 and the inner liner 122 due to gravity, thereby reducing or even eliminating the vibration noise of the electric gas exchange device 130.

The damping sleeve 181 further includes a mounting portion 188, the mounting portion 188 being disposed outside the housing 180 (specifically, the noise reduction upper shell 183 and the noise reduction lower shell 184). Specifically, the mounting portion 188 is generally configured in a cylindrical shape, and two coupling holes 189 are oppositely provided on both sides of the mounting portion 188 and spaced apart from the mounting portion 188.

As shown in fig. 5, 9 and 10, the outer surface of the mounting portion 188 is provided with a plurality of protrusions 193 contacting the liner 122, and the protrusions 193 can reduce the contact surface between the damping sleeve 181 and the liner 122, and can absorb or buffer the vibration of the electric gas exchange device 130 to reduce the vibration noise of the electric gas exchange device 130. Preferably, the plurality of protrusions 193 are disposed at equal intervals, and the plurality of protrusions 193 are hemispherical. It will be understood by those skilled in the art that the structure of the projection 193 is not limited to the present embodiment, and the projection 193 may also have a cylindrical shape, a polyhedral structure, or any other suitable structure, as required.

As shown in fig. 5 to 8, the electric drive unit 131 may be configured as a motor. The transmission 132 is connected to the electric drive unit 131, and the electric drive unit 131 can drive the transmission 132 to reciprocate. The airflow generating device 133 is connected with the transmission device 132, and the airflow generating device 133 is provided with a flexible cavity 135, and the shape of the flexible cavity 135 is changed under the reciprocating action of the transmission device 132. Specifically, the flexible chamber 135 can be switched between a squeezed state and a restored state, and when the flexible chamber 135 is switched between the two states, the volume of the flexible chamber 135 can be changed, so that a pressure change can be generated in the flexible chamber 135.

The air inlet and outlet valve device 134 is connected to the air flow generating device 133, and the air inlet and outlet valve device 134 has a valve inlet 145 and a valve outlet 146 respectively communicating with the flexible chamber 135. Air intake conduit 150 communicates valve inlet 145 with the ambient atmosphere such that ambient atmosphere may enter flexible chamber 135 via valve inlet 145. Gas outlet conduit 160 communicates valve gas outlet 146 with the cooking volume to enable gas in flexible chamber 135 to enter the cooking volume via valve gas outlet 146. The structure of the air inlet and outlet valve device 134 will be described in detail later.

As shown in fig. 1 and 3, the cover body 120 is provided with a cover air inlet 125 communicating with the outside and a cover air outlet 128 communicating with the cooking space. Specifically, the intake conduit 150 can communicate the lid intake port 125 with the valve intake port 145. An outlet line 160 can communicate the valve outlet port 146 with the cap outlet port 128. The inlet and outlet conduits 150 and 160 may be flexible hoses made of a material such as silicone or rubber. More specifically, the cover air outlet 128 is disposed on the removable cover 123.

As shown in fig. 7 and 8, transmission 132 comprises eccentric wheel 136, eccentric sleeve 137 and eccentric shaft 149 connecting eccentric wheel 136 with eccentric sleeve 137, eccentric wheel 136 being connected with electric drive unit 131, electric drive unit 131 being able to drive eccentric wheel 136 and eccentric shaft 149 in rotation, eccentric shaft 149 being connected with air flow generating device 133 via eccentric sleeve 137 to drive flexible chamber 135 between a squeezed state and a restored state. Specifically, the air flow generating device 133 comprises a closed end 138 and an air guide end 139 respectively located at two ends of the flexible cavity 135, the eccentric shaft 149 is connected to the closed end 138 via an eccentric bushing 137, and the air inlet and outlet valve device 134 is connected to the air guide end 139.

The airflow generating device 133 comprises a side wall 182 for forming a flexible chamber, the side wall 182 comprising a corrugated structure of at least one wave peak configuration. When eccentric shaft 149 rotates, the corrugated structure can be driven to compress and stretch reciprocally. Preferably, the corrugated structure comprises a plurality of peak configurations, wherein the number n of peak configurations satisfies: n is more than or equal to 2 and less than or equal to 8. Illustratively, the corrugated structure may include 3, 4 or 6 peak configurations, which may be set by one skilled in the art according to actual needs. This solution makes the compliance cavity 135 more easily compressible and stretchable, less prone to breakage and reliable fatigue life by configuring the side wall 182 of the compliance cavity 135 as a corrugated structure.

The air inlet and outlet valve device 134 can realize one-way passage of air. Specifically, as shown in fig. 7 and 8, the air inlet/outlet valve device 134 mainly includes a first valve body 141, a second valve body 142, an air inlet diaphragm 151, and an air outlet diaphragm 152. The first valve body 141 and the second valve body 142 are oppositely disposed, and the first valve body 141 is disposed closer to the flexible chamber 135. The inlet diaphragm 151 and the outlet diaphragm 152 are disposed on the first valve body 141, and are disposed at both sides of the first valve body 141, respectively. Specifically, the inlet diaphragm 151 is disposed facing the airflow generating device 133, i.e., facing the flexible chamber 135, and the outlet diaphragm 152 is disposed facing the second valve body 142. The inlet diaphragm 151 and the outlet diaphragm 152 are made of a flexible material.

The first valve body 141 is provided with at least one inlet passage 147 and at least one outlet passage 148, which communicate with the flexible chamber 135, respectively. Three inlet channels 147 and three outlet channels 148 are exemplarily shown in fig. 6. Inlet passage 147 and outlet passage 148 are configured as channels that are circular in cross-section. A valve inlet 145 and a valve outlet 146 are provided on the first valve body 141 corresponding to the at least one inlet passage 147 and the at least one outlet passage 148, respectively. An end of an inlet line 150 is connected to the valve inlet 145 and an end of an outlet line 160 is connected to the valve outlet 146.

The intake diaphragm 151 is connected to the first valve body 141 corresponding to the at least one intake passage 147, and the intake diaphragm 151 can be elastically deformed in accordance with the direction of the air flow to communicate or block the plurality of intake passages 147 and the valve intake port 145. The air outlet membrane 152 is connected to the first valve body 141 corresponding to the at least one air outlet channel 148, and the air outlet membrane 152 can elastically deform along with the air flow direction to communicate or block the plurality of air outlet channels 148 and the valve air outlet 146.

As shown in fig. 6 and 7, the first valve body 141 is provided with an intake mounting post 156 and an exhaust mounting post 157. The intake mounting post 156 faces the flexible chamber 135 and extends through the center of the intake diaphragm 151 to detachably connect the intake diaphragm 151 to the first valve body 141. An outlet mounting post 157 faces second valve body 142 and extends through the center of outlet diaphragm 152 to detachably connect outlet diaphragm 152 to first valve body 141.

Specifically, the intake diaphragm 151 is provided with an intake mounting hole 158, and the intake mounting post 156 extends through the intake mounting hole 158 and is clamped to the intake diaphragm 151 to detachably connect the intake diaphragm 151 to the first valve body 141. The outlet diaphragm 152 is provided with an outlet mounting hole 159, and the outlet mounting post 157 extends through the outlet mounting hole 159 and is held to the outlet diaphragm 152 to detachably connect the outlet diaphragm 152 to the first valve body 141.

The air inlet and outlet valve assembly 134 further includes a sealing diaphragm 144, and an outer peripheral edge of the sealing diaphragm 144 is disposed between the first valve body 141 and the second valve body 142. The sealing diaphragm 144 is made of a flexible material such as silicon rubber or rubber to be able to seal a gap between the first valve body 141 and the second valve body 142. Sealing diaphragm 144 is provided with an inlet gas passage port 185 that communicates valve inlet port 145 with inlet gas passage 147 and an outlet gas passage port 186 that communicates valve outlet port 146 with outlet gas passage 148. Both the inlet and outlet air passing ports 185 and 186 may be configured as circular through holes. It will be understood by those skilled in the art that the shapes of the inlet and outlet through holes 185 and 186 are not limited to the present embodiment, and the inlet and outlet through holes 185 and 186 may be configured as through holes having an elliptical shape, a polygonal shape, or any other suitable shape, as required.

During cooking, when the temperature of the food cooked in the inner pot 111 is critical boiling or just before the boiling over for a while, or when the temperature in the inner pot 111 reaches a set value, viscous substances such as starch in the food may be precipitated into water, and steam is wrapped, so that a large amount of foam may be formed, and the foam may be accumulated in the cavity space 192 above the food storage space 191. The electric driving unit 131 can be controlled to drive the transmission device 132 to reciprocate, so as to compress and stretch the flexible cavity 135, and the flexible cavity 135 can be switched between a squeezed state and a recovered state. When flexible chamber 135 is compressed, the chamber volume decreases and the chamber interior air pressure is greater than the chamber exterior pressure, forcing air out through valve outlet port 146 and outlet passage 148. When the flexible chamber 135 is stretched, the volume of the chamber increases, the air pressure inside the chamber is low, and air with high external pressure enters the flexible chamber 135 through the valve inlet 145 and the inlet passage 147. The compression and extension of the flexible chamber 135 is accomplished in a cycle of continuous motion, with continuous flow output from the valve outlet 146 into the chamber volume 192. Generally, the temperature difference between the delivered gas and the foam in the cavity space 192 exists, so that the delivered gas can liquefy and shrink the steam in the foam to be broken after entering the cavity space 192 to contact the foam accumulated in the cavity space 192, thereby preventing the overflow. The overflow can be avoided even under the condition of quick cooking with large fire.

As shown in fig. 1, the cover 120 is further provided with a steam valve assembly 124, and the steam valve assembly 124 includes a steam passage 126 communicating the cooking space with the external atmosphere. The steam passage 126 has a steam outlet 127 communicating with the outside atmosphere, and the cover air inlet 125 may be provided on the steam valve assembly 124 with the steam outlet 127 disposed around the outer peripheral side of the cover air inlet 125, i.e., the steam outlet 127 is disposed around the cover air inlet 125. During operation of the cooking appliance 100, when food in the food storage space 191 is in a boiling stage, a large amount of steam is generated in the cavity space 192 and is discharged through the steam passage 126. At the same time, as described above, the electrical gas exchange device 130 also operates to draw in gas from the lid gas inlet 125 and deliver the drawn-in gas through the lid gas outlet 128 into the cavity space 192. Since the steam outlet 127 is disposed around the cover air inlet 125, the steam discharged through the steam outlet 127 forms a circumferentially continuous or closed steam curtain around and above the cover air inlet 125 to filter the air sucked into the cover air inlet 125, thereby preventing impurities such as oil smoke, dust and the like from being sucked into the cover air inlet 125, avoiding oil stains or dirt from remaining in the air pipeline and even blocking the air pipeline, and avoiding affecting the taste of food.

Specifically, in one embodiment of the present invention, the steam outlet 127 is disposed around the lid air inlet 125. The steam outlet 127 includes a plurality of (e.g., two, three, or more) sub-steam outlets arranged at intervals in a circumferential direction thereof. The plurality of sub-steam outlets may or may not be equally spaced. The sub-vapor outlets may be in any suitable shape, such as arcuate, circular, rectangular, and the like. The plurality of sub-steam outlets may be identical in shape or different in shape.

In a further embodiment of the invention, which is not shown, the steam outlet 127 is configured as a circumferentially closed ring which surrounds the cover air inlet 125. It should be noted that the term "annular" as used herein refers to any suitable shape that is closed or end-to-end in the circumferential direction and is hollow, and the outer contour may be any suitable shape such as circular, rectangular, pentagonal, hexagonal, etc.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. It will be appreciated by those skilled in the art that many more modifications and variations are possible in light of the above teaching and are intended to be included within the scope of the invention.

Claims (11)

1. A cooking appliance, comprising:

a cover body;

the cover body is arranged on the cooker body, when the cover body covers the cooker body, a cooking space is formed between the cover body and the cooker body, and the cover body or the cooker body comprises a base; and

an electrically powered gas exchange device disposed at the base and comprising:

an electric drive unit;

a transmission device connected with the electric drive unit to be driven by the electric drive unit to reciprocate;

an air flow generating device connected with the transmission device, wherein the air flow generating device is provided with a flexible cavity which is configured to be capable of being switched between a squeezed state and a reset state under the reciprocating action of the transmission device;

the air inlet and outlet valve device is connected with the airflow generating device and is provided with a valve air inlet and a valve air outlet which are respectively communicated with the flexible cavity, the valve air inlet is communicated with the outside atmosphere, and the valve air outlet is communicated with the cooking space;

a housing in which each of the electric drive unit, the transmission, the airflow generating device, and the air inlet and outlet valve device is at least partially disposed; and

a shock-absorbing sleeve sleeved outside the housing, and the electric gas exchange device is connected to the base through the shock-absorbing sleeve.

2. The cooking appliance according to claim 1, wherein at least two connecting portions are provided on the base, the damping sleeve correspondingly comprises at least two engaging portions connected to the connecting portions, and a distance between the connecting portions is greater than a distance between the corresponding engaging portions to place the damping sleeve in a laterally stretched state.

3. The cooking appliance of claim 2, wherein the connecting portion is an attachment post disposed on the base, the mating portion is a coupling hole through which the connecting portion extends, and/or the connecting portion and the coupling hole are interference fit.

4. The cooking appliance according to claim 3, wherein a relationship between a distance L1 between two of the connection holes of the damper sleeve and a distance L2 between corresponding two of the connection portions satisfies: L2-L1 is more than or equal to 5 mm.

5. The cooking appliance according to claim 3 or 4, wherein the electric gas exchange device comprises two damping sleeves, the two damping sleeves are respectively sleeved at two ends of the outer shell, each damping sleeve is provided with two connecting holes, and the base is correspondingly provided with four connecting parts.

6. The cooking appliance according to any one of claims 1 to 4, wherein the damping sleeve further comprises a mounting portion disposed outside the outer shell, an outer surface of the mounting portion being provided with a plurality of protrusions contacting the base.

7. The cooking appliance of claim 6,

the plurality of protrusions are arranged at equal intervals, and/or

The plurality of convex parts are of hemispherical, cylindrical or polyhedral structures.

8. The cooking appliance according to any one of claims 1 to 4, wherein said airflow generating means comprises a side wall for forming said flexible chamber, said side wall comprising a corrugated structure of at least one wave crest configuration.

9. The cooking appliance according to any one of claims 1 to 4, wherein said transmission means comprises an eccentric wheel connected to said electric drive unit and an eccentric shaft connected to said eccentric wheel, said electric drive unit being able to drive said eccentric wheel and said eccentric shaft in rotation, said eccentric shaft being connected to said air flow generating means to drive said flexible chamber in switching between said squeezed state and said restored state.

10. The cooking appliance according to any one of claims 1 to 4, wherein the air inlet and outlet valve device comprises a first valve body, a second valve body, an air inlet diaphragm and an air outlet diaphragm, the first valve body is provided with an air inlet channel and an air outlet channel which are respectively communicated with the flexible cavity, the valve air inlet and the valve air outlet are respectively arranged on the second valve body, the air inlet diaphragm and the air outlet diaphragm are respectively connected to the first valve body corresponding to the air inlet channel and the air outlet channel, the air inlet diaphragm can elastically deform along with the air flow direction to communicate or block the air inlet channel and the valve air inlet, and the air outlet diaphragm can elastically deform along with the air flow direction to communicate or block the air outlet channel and the valve air outlet.

11. The cooking appliance of claim 10 wherein said air valve means further comprises a sealing diaphragm, a peripheral edge of said sealing diaphragm being disposed between said first valve body and said second valve body, and said sealing diaphragm being provided with an inlet passage port communicating said valve inlet port with said inlet passage and an outlet passage port communicating said valve outlet port with said outlet passage.

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